COMPRESSORS, GAS TURBINES AND JET ENGINES QUIZ

The velocity of air entering in a rocket is ___ as compared to an aircraft.

Same

Zero

Less

More

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum combustion pressure in gas turbine as compared to I.C. engine is

More

Less

Same

Depends on other factors

TRUE ANSWER : ?
YOUR ANSWER : ?

Separators are generally used in air compressor installations

Between the after-cooler and receiver

Before first stage suction

Before the inter-cooler

After the inter-cooler

TRUE ANSWER : ?
YOUR ANSWER : ?

Reheating in a multistage expansion gas turbine ________ compressor work.

Decreases

Has no effect on

Increases

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Gas turbines for power generation are normally used

In emergency

To supply base load requirements

To enable start thermal power plant

To supply peak load requirements

TRUE ANSWER : ?
YOUR ANSWER : ?

Separators in compressor installations are located

After receiver

After inter-cooler

Between after-cooler and air receiver

Before inter-cooler

TRUE ANSWER : ?
YOUR ANSWER : ?

For speed above 3000 km/hour, it is more advantageous to use

Rockets

Ramjet engine

Turbojet engine

Propellers

TRUE ANSWER : ?
YOUR ANSWER : ?

The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio)

1 - (1/r) ɣ-1/ɣ

r ɣ-1

1 - (1/r) ɣ/ɣ-1

1 - r ɣ-1

TRUE ANSWER : ?
YOUR ANSWER : ?

Gas turbine works on

Brayton or Atkinson cycle

Carnot cycle

Rankine cycle

Ericsson cycle

TRUE ANSWER : ?
YOUR ANSWER : ?

The efficiency of the vane blower is (where W₁ = Workdone due to compression, and W₂ = Workdone due to back flow)

(W₁ + W₂)/W₁

W₂/(W₁ + W₂)

(W₁ + W₂)/W₂

W₁/(W₁ + W₂)

TRUE ANSWER : ?
YOUR ANSWER : ?

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